I see where your understanding of the word comes from. To get the correct meaning though you have to go to the Hebrew. It differs substantially from modern English in meaning.
Chasten =
1) to chasten, discipline, instruct, admonish
a) (Qal)
1) to chasten, admonish
2) to instruct
3) to discipline
b) (Niphal) to let oneself be chastened or corrected or admonished
c) (Piel)
1) to discipline, correct
2) to chasten, chastise
d) (Hiphil) to chasten
e) (Nithpael) to teach
Discipline =
1) discipline, chastening, correction
a) discipline, correction
b) chastening
Never confuse Chastisement and Discipline with punishment.
Strangely the word punishment means the same now as it did in Bible times.
punish
<noscript>

</noscript> /ˈpʌn
ɪʃ/

Show Spelled1. to subject to pain, loss, confinement, death, etc., as a penalty for some offense, transgression, or fault: to punish a criminal.
2. to inflict a penalty for (an offense, fault, etc.): to punish theft.
3. to handle severely or roughly, as in a fight.
4. to put to painful exertion, as a horse in racing.
dictionary.com
Or if you prefer.
Punishment=
ekdikēsis= With respect to 2Cr 7:11: "...
meeting out of justice;
doing justice to all parties. See on Luk 18:3; 21:22. The word has, however, the sense of
requital (see on Rom 12:19; compare 2Th 1:8), and carries with it, etymologically, the sense of of
vindication, as Luk 18:7, 8." (Marvin Vincent,
Word Studies in the New Testament, 3:329)
or
AV —
vengeance 4, avenge + 4060 3,
revenge 1,
punishment 1
Of course we will have fun with this. Why else would we even discuss it? Fun and learning.
Or you could look it up in Merriam-Webster's dictionary.
Definition of DISCIPLINE
1: punishment
2obsolete : instruction
3: a field of study
4: training that corrects, molds, or perfects the mental faculties or moral character
5 a : control gained by enforcing obedience or order
b : orderly or prescribed conduct or pattern of behavior
c : self-control
6: a rule or system of rules governing conduct or activity
In Hebrews 12:11 it is the
Greek word
paideia
1) the whole training and education of children (which relates to the cultivation of mind and morals, and employs for this purpose now commands and admonitions, now reproof and punishment) It also includes the training and care of the body
2) whatever in adults also cultivates the soul, esp. by correcting mistakes and curbing passions.
a) instruction which aims at increasing virtue
b) chastisement, chastening, (of the evils with which God visits men for their amendment)
Merriam-Webster definition of chastise;
Definition of CHASTISE
1: to inflict punishment on (as by whipping)
2: to censure severely : castigate
3archaic : chasten 2
Withhold not correction from the child: for [if]
thou beatest him with the rod, he shall not die. Thou shalt beat him with the rod, and shalt deliver his soul from hell. Proverbs 23:13&14
The Hebrew word translated as beat(est) is
nakah and means;
1) to strike, smite, hit, beat, slay, kill
a) (Niphal) to be stricken or smitten
b) (Pual) to be stricken or smitten
c) (Hiphil)
1) to smite, strike, beat, scourge, clap, applaud, give a thrust
2) to smite, kill, slay (man or beast)
3) to smite, attack, attack and destroy, conquer, subjugate, ravage
4) to smite, chastise, send judgment upon, punish, destroy
d) (Hophal) to be smitten
1) to receive a blow
2) to be wounded
3) to be beaten
4) to be (fatally) smitten, be killed, be slain
5) to be attacked and captured
6) to be smitten (with disease)
7) to be blighted (of plants)
Don't you think it's important to try and get all the facts before forming an opinion?